package com.sam;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.apache.tomcat.dbcp.pool.impl.GenericKeyedObjectPool.Config;

/**
 * Servlet Filter implementation class CharacterEncodingFilter
 */
public class CharacterEncodingFilter implements Filter {
	String characterEnconing;
	Boolean enabled;
	
    /**
     * Default constructor. 
     */
    public CharacterEncodingFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		// TODO Auto-generated method stub
		// place your code here

		// pass the request along the filter chain
		if (enabled || characterEnconing != null) {
			request.setCharacterEncoding(characterEnconing);
			response.setCharacterEncoding(characterEnconing);
		}
		chain.doFilter(request, response);
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		characterEnconing = fConfig.getInitParameter("characterEnconing");
		enabled = "true" .equalsIgnoreCase(fConfig.getInitParameter("enabled").trim());
	}

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		characterEnconing = null;
	}
}

